

The 6ES7211-0BA23-0XB0 is a genuine SIEMENS SIMATIC S7-200 CPU 221 Compact Unit, engineered for reliable and cost-effective control in small automation systems. This unit integrates essential I/O and processing capabilities into a single, space-saving package, making it a preferred choice for standalone machines and simple process applications. With its proven S7-200 architecture, it offers stable performance, easy programming via STEP 7-Micro/WIN, and compatibility with a wide range of expansion modules. The CPU 221 is built for demanding industrial environments, ensuring long service life with minimal maintenance.
| Parameter | Specification |
|---|---|
| Product Type | SIMATIC S7-200 CPU 221 Compact Unit |
| Order Number | 6ES7211-0BA23-0XB0 |
| Power Supply | 24V DC (20.4 to 28.8V DC) |
| Digital Inputs | 6 (24V DC, sink/source) |
| Digital Outputs | 4 (24V DC, transistor, 0.75A per output) |
| Program Memory | 4 KB (user program and data) |
| Data Memory | 2 KB (retentive) |
| Communication Interface | 1 x RS-485 (PPI, MPI, USS protocols) |
| Max. Local Expansion Modules | None (standalone compact unit) |
| Real-Time Clock | Yes (with backup capacitor) |
| Dimensions (W x H x D) | 80 x 80 x 62 mm (3.15 x 3.15 x 2.44 in) |
| Mounting | DIN rail (EN 50022) or panel mounting |
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
| Storage Temperature | -40°C to 70°C (-40°F to 158°F) |
| Relative Humidity | 95% (non-condensing) |
| Degree of Protection | IP20 |
| Weight | Approx. 0.27 kg (0.6 lb) |
| Certifications | CE, cULus, FM, ATEX (Zone 2 optional) |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22